(1980). Environmental education in the light of the Tbilisi conference. UNESCO.
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Citação norma Chicago
Environmental Education in the Light of the Tbilisi Conference. Paris: UNESCO, 1980.
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Citação norma MLA
Environmental Education in the Light of the Tbilisi Conference. UNESCO, 1980.
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Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.